import java.util.Scanner;

public class Exer344 {
    public static void main(String[] args) {
        System.out.println("请输入一个数：");
        Scanner input = new Scanner(System.in);
        int num = input.nextInt();
        if (num % 7 == 0) {
            System.out.println(num + "是7的倍数");
        } else {
            System.out.println(num + "不是7的倍数");
        }
    }
}
